Last Day Free $55 – The Writings of Irenæus, Vols. 1 & 2 by St. Irenæus
Irenaeus of Lyons was an influential Church Father of the second century. He was one of the first to emphasize the episcopacy and the canonicity of the four Gospels, playing a large role in the formation of a New Testament canon. Irenaeus was a disciple of Polycarp, who in turn was a disciple of the Apostle John.
The Writings of Irenaeus is an extensive collection, including his most famous work, Against Heresies—directed against the Gnostic heretics.